My previous advice still stands, back off from W don't discuss the R or M uless she wants to and continue to GAL. Enjoy the company of OP but don't get involved with anyone unless you are done with your M.
While you are around W just show her that you are happy and content with yourself despite your situation. Be a friend to the point where she starts to think how can I D a guy who is so happy and fun loving and content.
The bottom line is you cannot pull W back to you, she has to come back in her own time and under her own steam.
